Spray gun attachment

ABSTRACT

An attachment for a spray gun so that it may be readily attached directly to a disposable paint container within which the paint is purchased, the attachment comprising an adapted that is threadingly secured over the paint container and which includes a pair of hold down clamps for securing a lower end of the spray gun thereto.

United States Patent Inventor Charles Boltic 746 Lemington St., Greensburg, Pa. 15601 Appl. No 850,988 Filed Aug. 18, 1969 Patented July 20, 1971 SPRAY GUN ATTACHMENT 2 Claims, 2 Drawing Figs.

03. Cl 239/318, 215/43, 220/29, 292/256.75 Int. Cl 365d B65d 51/20 Field of Search 239/318; 222/490, 541, 82; 215/43; 220/29, 55 D; 292/256.75

[56] References Cited UNITED STATES PATENTS 1,942,810 l/1934 Gibbs 215/43 2,034,006 3/1936 Smith 206/635 2,387,324 10/1945 Glickman. 220/55 D 2,940,673 6/1960 Budwig .0 239/318 FOREIGN PATENTS 59,026 9/1891 Germany 292/256 75 Primary Examiner M. Henson Wood, Jr. Assistant Examiner-R. William Thieme ABSTRACT: An attachment for a spray gun so that it may be readily attached directly to a disposable paint container within which the paint is purchased, the attachment comprising an adapted that is threadingly secured over the paint container and which includes a pair of hold down clamps for securing a lower end of the spray gun thereto.

IIIIIIIIIIg} al SPRAY GUN ATTACHMENT This invention relates generally to paint spray guns and comprises a modified form of applicant's attachment filed in the US. Patent Qffice June 7, 1968Ser. No. 737,698 now abandoned.

Ready-mixed paint is retailed in throwaway containers, the paint being conventionally transferred into a wide-mouthed container that comprises a component of a standard paint spray gun. Such paint spray gun container must be thoroughly cleaned with thinner or turpentine after a painting spray job is finished so that the same can be again reused for a subsequent painting operation with another color.

This time-consuming operation is of course not desirable.

Accordingly it is the principle object of the present invention to provide a paint spray gun attachment of improved type which permits a paint spray gun to be used directly with a throwaway container containing the ready-mixed paint.

Yet another object of the present invention is to provide an improved paint spray gun attachment which is threadingly secured to the top of a throwaway paint container and which may be clamped to a paint spray gun.

Otherobjects of the present invention are to provide an improved paint spray gun attachment which is simple in design, inexpensive to manufacture, rugged in construction, easy to use and efficient in operation.

These and other objects will be readily evident upon a study of the following specification and the accompanying drawing wherein:

Fig. l is a side cross-sectional view of the present invention shown mounted between a paint spray gun and a throwaway paint container, and

FIG. 2 is a fragmentary cross-sectional view of the adapter and showing one of the clamp assemblies shown disassembled.

Referring now to the drawing in detail, the reference numeral represents a paint spray gun attachment according to the present invention wherein there is an adapter 11 which includes a collar ,12 that is inwardly turned on its lower end as shown at 13 and which includes accordingly an inner wall 14 that is internally threaded as shown at 15 for securement over a mouth of a throwaway paint container 15'.

Adjacent the upper edge of the inner wall 14, there is an integral circular top wall 17 having a central opening 18 therethrough. Upon the underside of the top wall 17 there is positioned a rubber gasket 19 below which there is a metal washer 20, the gasket and washer being attached to the underside of the top wall 17 by means of a plurality of bolts 21 extending through the top wall 17 and secured by means of nuts 22 As shown in FIG. 2 of the drawing, it is to be noted that the gasket 19 does not have a central opening therethrough but is provided with a plurality of radially extending slots 23 which permit tongues 24 formed between the slits 23 to be bent upwardly and allow paint to pass therethrough.

Upon the upper edge 25 of the collar 12 there is placed a plate 26 having a central opening 27 therethrough, as shown in FIG. 1 of the drawing. The outer edge of the plate 26 is provided with a downwardly extending bead 28 which fits over the upper edge of the collar so to align placement therewith.

A pair of diametrically spaced-apart clamp assemblies 29 are secured to the collar 12 for the purpose of securing the plate 26 rigidly to the collar. Each clamp assembly 29 is comprised of a block 30 secured by screws 31 to an outer side of the collar 12, the block 30 having a downwardly extending 'opening 32 therethrough and the block having oppositely positioned slots 33 on an upper portion thereof which commu nicate with the vertically extending opening 32.

An L-shaped clamp 34 includes a vertically extending shank 35 having a lower end thereof threaded, as shown at 36, the shank 35 being integral with a hook 37 at right angle thereto and which in operative position is placed against the upper side of the plate to hold the same downward.

The shank 35 is inserted downwardly into the opening 32 of the block 30 and a nut 38 is threadingly engaged with the clamp thread 36 thus securing the same.

It is to be noted that the clamp 34 also includes a pin 39 extending therethrough, each opposite side of the pin 39 being receivable within the slots 33 of the block 30 so to prevent the clamp from rotating while the nut 38 is being tightened.

It is to be noted that the plate 26 may comprise an integral part of a spray gun 39' and wherein the plate 26 will accordingly comprise a flange of the spray gun. Alternately, however, the spray gun 39 may comprise having a downwardly extending pipe receivable through the opening 27 of the separate plate 26, the lower end of the pipe being externally threaded so to receive a locking nut thus rigidly securing the separate plate 26.

A gasket may be positioned between the lower end of the plate and the upper side of the top wall 17 so that the paint is directly moved from opening 18 into the spray gun pipe.

Thus there has been provided an improved paint spray gun which is threadingly secured to a disposable paint container and which is clamped to a spray gun.

What I now claim is:

l. in a paint spray gun attachment, an adapter comprising a collar, said collar including a cylindrical outer wall and a concentrically positioned cylindrical inner wall integrally formed with said outer wall at the lower ends thereof, said inner wall being internally threaded for securement to a disposable paint container; a top wall integral with the upper edge of said inner wall, said top wall having a central opening therethrough, said top wall having a rubber gasket on the under side thereof and a metal washer therebelow, said gasket and washer being secured to said top wall by means of a plurality of bolts extending through said top wall and secured by nuts, a pair of diametrically spaced-apart clamp assemblies being carried by said collar, each said clamp assembly comprising a block secured to an outer side of said collar, said block each having a central vertical opening extending therethrough, said block being provided with a pair of transverse slots on an upper side thereof and communicating with said vertically extending opening, said transverse slots being in alignment with each other, and said clamp assembly including a clamp member comprised of an L-shaped member having a vertically extending shank, the lower end of said shank being threaded, an upper end of said shank being integral with a hook extending at a right angle to said shank, an intermediate portion of said shank having a transversely extending pin therethrough, said pin extending on each end from said shank, said pin ends being receivable within said transverse slots of said block, and said threaded end of said shank being engaged with a nut placed on an underside of said block.

2. The combination as set forth in claim 1, wherein a plate is positioned over an upper edge of said collar, a peripheral edge of said plate having a downward extending bead over said collar edge, and said plate having a central opening therethrough for access of paint to said spray gun, and said hooks of said clamp assemblies being adaptable for hearing against an upper side of said plate. 

1. In a paint spray gun attachment, an adapter comprising a collar, said collar including a cylindrical outer wall and a concentrically positioned cylindrical inner wall integrally formed with said outer wall at the lower ends thereof, said inner wall being internally threaded for securement to a disposable paint container; a top wall integral with the upper edge of said inner wall, said top wall having a central opening therethrough, said top wall having a rubber gasket on the under side thereof and a metal washer therebelow, said gasket and washer being secured to said top wall by means of a plurality of bolts extending through said top wall and secured by nuts, a pair of diametrically spaced-apart clamp assemblies being carried by said collar, each said clamp assembly comprising a block secured to an outer side of said collar, said block each having a central vertical opening extending therethrough, said block being provided with a pair of transverse slots on an upper side thereof and communicating with said vertically extending opening, said transverse slots being in alignment with each other, and said clamp assembly including a clamp member comprised of an L-shaped member having a vertically extending shank, the lower end of said shank being threaded, an upper end of said shank being integral with a hook extending at a right angle to said shank, an intermediate portion of said shank having a transversely extending pin therethrough, said pin extending on each end from said shank, said pin ends being receivable within said transverse slots of said block, and said threaded end of said shank being engaged with a nut placed on an underside of said block.
 2. The combination as set forth in claim 1, wherein a plate is positioned over an upper edge of said collar, a peripheral edge of said plate having a downward extending bead over said collar edge, and said plate having a central opening therethrough for access of paint to said spray gun, and said hooks of said clamp assemblies being adaptable for bearing against an upper side of said plate. 